Whenever I paste an item's revision into another's I get an 'Specification' type of relation. I am being unable to change it in the Rich Client. Could someone help me to find the way to change it to another value, please?

I would also like to know if there is a way to define which type of relation applies during a paste operation for a certain type of business object (not changing the default, which is 'Specification'). I imagine this is defined in the BMIDE, but I am not finding anything in the documentation (my fault).